Hello, I have an error with node Element.GetParameterValueByName If I query a family on its level and it is below level 0, I have the following error: (with other parameters it works) Warning: Element.GetParameterValueByName operation failed. Can not get the item from the current document! The i…

This will get parameters from the linked elements : [image] import clr clr.AddReference('RevitAPI') from Autodesk.Revit.DB import* if isinstance(IN01],list): elements = [UnwrapElement(i) for i in IN[0]] else: elements = [UnwrapElement(IN[0])] pvalues = [] for e in elements: p = e.Parameters…

Hello Alain, do these levels exist in your host file?

Hi, Yes, It seems that it is a problem of sharing of coordinates, but I do not find

This could be what you need, please let us know: [image] Shared coordinates within Dynamo Revit Hi everybody, I’m having an issue within Dynamo. I’ve linked a MEP model to a Structural model. I’ve linked them by Shared Coordinates. I’ve used “Categories” and “Element.Geo…

With CoordinateSystem.Transform How to use it ?

It will map one coordinate system into another (I would suggest to try first on a simple object). You will find more information here: http://dictionary.dynamobim.com/ http://dynamoprimer.com/en/Appendix/A-2_index-of-nodes.html

Thank you for your help, But unfortunately, I do not have too much experience in dynamo to understand the use of the node. Moreover I can not find an example on its use

OK, I’ll be back on this very soon, it’s not as difficult as it seems, please do some tests in the meantime with the nodes returned by a “Coordinate system” query. Basically, a coordinate system is compound by an origin point and 3 vectors (it’s a cartesian system). So just use a basic family like a…

Ok I’ll see. But why is it Ok with levels above level 0? A problem of coordinates shared at the time of the binding of the model?

I don’t know personally, you could maybe find some kind of answer here: [image] Getting linked revit files Z value and levels to create views on host file Revit After a simple search on the forum you’ll find that part of this question has been answered already… There ar…

OK, I replicated the situation and I got the same message and a null value for negative level. But if I query on Host parameter, there’s no problem of this kind.

Error node Element.GetParameterValueByName on level "negative"

Revit

Yna_Db December 17, 2016, 7:56am 4

This could be what you need, please let us know:

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Error node Element.GetParameterValueByName on level "negative"

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